Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

    Records 1 - 20 / 74

    • help
    • print

      Print search results

    • export

      Export search results

    • alert
      We will mail you new results for this query: q=Walsh
    Check title to add to marked list
    Genomic Regions Associated With Skeletal Type Traits in Beef and Dairy Cattle Are Common to Regions Associated With Carcass Traits, Feed Intake and Calving Difficulty
    Doyle, Jennifer L. ; Berry, Donagh P. ; Veerkamp, Roel F. ; Carthy, Tara R. ; Walsh, Siobhan W. ; Evans, Ross D. ; Purfield, Deirdre C. - \ 2020
    Frontiers in Genetics Livestock Genomics 11 (2020). - ISSN 1664-8021
    cattle - genome-wide association study - linear type traits - sequence - single nucleotide polymorphism - skeletal

    Linear type traits describing the skeletal characteristics of an animal are moderately to strongly genetically correlated with a range of other performance traits in cattle including feed intake, reproduction traits and carcass merit; thus, type traits could also provide useful insights into the morphological differences among animals underpinning phenotypic differences in these complex traits. The objective of the present study was to identify genomic regions associated with five subjectively scored skeletal linear traits, to determine if these associated regions are common in multiple beef and dairy breeds, and also to determine if these regions overlap with those proposed elsewhere to be associated with correlated performance traits. Analyses were carried out using linear mixed models on imputed whole genome sequence data separately in 1,444 Angus, 1,129 Hereford, 6,433 Charolais, 8,745 Limousin, 1,698 Simmental, and 4,494 Holstein-Friesian cattle, all scored for the linear type traits. There was, on average, 18 months difference in age at assessment of the beef versus the dairy animals. While the majority of the identified quantitative trait loci (QTL), and thus genes, were both trait-specific and breed-specific, a large-effect pleiotropic QTL on BTA6 containing the NCAPG and LCORL genes was associated with all skeletal traits in the Limousin population and with wither height in the Angus. Other than that, little overlap existed in detected QTLs for the skeletal type traits in the other breeds. Only two QTLs overlapped the beef and dairy breeds; both QTLs were located on BTA5 and were associated with height in both the Angus and the Holstein-Friesian, despite the difference in age at assessment. Several detected QTLs in the present study overlapped with QTLs documented elsewhere that are associated with carcass traits, feed intake, and calving difficulty. While most breeding programs select for the macro-traits like carcass weight, carcass conformation, and feed intake, the higher degree of granularity with selection on the individual linear type traits in a multi-trait index underpinning the macro-level goal traits, presents an opportunity to help resolve genetic antagonisms among morphological traits in the pursuit of the animal with optimum performance metrics.

    Genomic regions associated with muscularity in beef cattle differ in five contrasting cattle breeds
    Doyle, Jennifer L. ; Berry, Donagh P. ; Veerkamp, Roel F. ; Carthy, Tara R. ; Evans, Ross D. ; Walsh, Siobhán W. ; Purfield, Deirdre C. - \ 2020
    Genetics, Selection, Evolution 52 (2020)1. - ISSN 0999-193X - 1 p.

    BACKGROUND: Linear type traits, which reflect the muscular characteristics of an animal, could provide insight into how, in some cases, morphologically very different animals can yield the same carcass weight. Such variability may contribute to differences in the overall value of the carcass since primal cuts vary greatly in price; such variability may also hinder successful genome-based association studies. Therefore, the objective of our study was to identify genomic regions that are associated with five muscularity linear type traits and to determine if these significant regions are common across five different breeds. Analyses were carried out using linear mixed models on imputed whole-genome sequence data in each of the five breeds, separately. Then, the results of the within-breed analyses were used to conduct an across-breed meta-analysis per trait. RESULTS: We identified many quantitative trait loci (QTL) that are located across the whole genome and associated with each trait in each breed. The only commonality among the breeds and traits was a large-effect pleiotropic QTL on BTA2 that contained the MSTN gene, which was associated with all traits in the Charolais and Limousin breeds. Other plausible candidate genes were identified for muscularity traits including PDE1A, PPP1R1C and multiple collagen and HOXD genes. In addition, associated (gene ontology) GO terms and KEGG pathways tended to differ between breeds and between traits especially in the numerically smaller populations of Angus, Hereford, and Simmental breeds. Most of the SNPs that were associated with any of the traits were intergenic or intronic SNPs located within regulatory regions of the genome. CONCLUSIONS: The commonality between the Charolais and Limousin breeds indicates that the genetic architecture of the muscularity traits may be similar in these breeds due to their similar origins. Conversely, there were vast differences in the QTL associated with muscularity in Angus, Hereford, and Simmental. Knowledge of these differences in genetic architecture between breeds is useful to develop accurate genomic prediction equations that can operate effectively across breeds. Overall, the associated QTL differed according to trait, which suggests that breeding for a morphologically different (e.g. longer and wider versus shorter and smaller) more efficient animal may become possible in the future.

    Whole genome sequence GWAS reveals muscularity in beef cattle differs across five cattle breeds
    Doyle, J.L. ; Berry, D.P. ; Veerkamp, R.F. ; Carthy, Tara R. ; Walsh, S.W. ; Purfield, Deirdre C. - \ 2019
    In: Book of Abstracts of the 70th Annual Meeting of the European Federation of Animal Science. - Wageningen : Wageningen Academic Publishers (Book of Abstracts ) - ISBN 9789086863396 - p. 210 - 210.
    ISSN ISBN 1382-6077
    Why interventions in the seed systems of roots, tubers and bananas crops do not reach their full potential
    Almekinders, Conny J.M. ; Walsh, Steve ; Jacobsen, Kim S. ; Andrade-Piedra, Jorge L. ; McEwan, Margaret A. ; Haan, Stef de; Kumar, Lava ; Staver, Charles - \ 2019
    Food Security 11 (2019)1. - ISSN 1876-4517 - p. 23 - 42.
    Decentralized multipliers - Farmer demand - Seed quality - Vegetative multiplication

    Seed systems for roots, tuber, and banana (RTB) crops receive relatively little attention from development-oriented research and commercial seed sector actors, despite their importance for food security, nutrition and rural livelihoods. We review RTB seed systems—with particular reference to potato, sweetpotato, cassava, yam and banana —to reflect on current seed system development approaches and the unique nature of these systems. We refer to our own experiences, literature and 13 case studies of RTB seed system interventions to identify gaps in our knowledge on farmer practices in sourcing and multiplying seed, and processes affecting seed quality. Currently, most approaches to developing RTB seed systems favour decentralised multiplication models to make quality seed available to smallholder farmers. Nevertheless, arguments and experiences show that in many situations, the economic sustainability of these models cannot be guaranteed, among others because the effective demand of farmers for seed from vegetatively propagated crops is unclear. Despite the understudied nature of farmers’ agronomic and social practices in relation to seed production and sourcing in RTB crops, there is sufficient evidence to show that local RTB seed systems are adaptive and dynamic. Our analysis suggests the paramount importance of understanding farmers’ effective demand for seed and how this affects the sustainable supply of quality seed from specialized producer-entrepreneurs, regardless of the seed system paradigm. From the case studies we learnt that few interventions are designed with a rigorous understanding of these issues; in particular, what types of interventions work for which actors, where, and why, although this is a necessary condition for prioritizing investments to increase the use of improved seed by smallholder farmers.

    Mapping topsoil organic carbon concentrations and stocks for Tanzania
    Kempen, Bas ; Dalsgaard, Soren ; Kaaya, Abel K. ; Chamuya, Nurdin ; Ruiperez Gonzalez, Maria ; Pekkarinen, Anssi ; Walsh, Markus G. - \ 2019
    Geoderma 337 (2019). - ISSN 0016-7061 - p. 164 - 180.
    Tanzania is one of the countries that has embarked on a national programme under the United Nations collaborative initiative on Reducing Emissions from Deforestation and forest Degradation (REDD). Tanzania is currently developing the capacity to enter into a carbon monitoring REDD+ regime. In this context spatially representative soil carbon datasets and accurate predictive maps are important for determining the soil organic carbon pool. The main objective of this study was to model and map the SOC stock for the 0–30-cm soil layer to provide baseline information for REDD+ purposes. Topsoil data of over 1400 locations spread throughout Tanzania from the National Forest Monitoring and Assessment (NAFORMA), were used, supplemented by two legacy datasets, to calibrate simple kriging with varying local means models. Maps of SOC concentrations (g kg−1) were generated for the 0–10-cm, 10–20-cm, 20–30-cm, 0–30-cm layers, and maps of bulk density and SOC stock (kg m−2) for the 0–30-cm layer. Two approaches for modelling SOC stocks were considered here: the calculate-then-model (CTM) approach and the model-then-calculate approach (MTC). The spatial predictions were validated by means of 10-fold cross-validation. Uncertainty associated to the estimated SOC stocks was quantified through conditional Gaussian simulation. Estimates of SOC stocks for the main land cover classes are provided. Environmental covariates related to soil and terrain proved to be the strongest predictors for all properties modelled. The mean predicted SOC stock for the 0–30-cm layer was 4.1 kg m−2 (CTM approach) translating to a total national stock of 3.6 Pg. The MTC approach gave similar results. The largest stocks are found in forest and grassland ecosystems, while woodlands and bushlands contain two thirds of the total SOC stock. The root mean squared error for the 0–30-cm layer was 1.8 kg m−2, and the R2-value was 0.51. The R2-value of SOC concentration for the 0–30-cm layer was 0.60 and that of bulk density 0.56. The R2-values of the predicted SOC concentrations for the 10-cm layers vary between 0.46 and 0.54. The 95% confidence interval of the predicted average SOC stock is 4.01–4.15 kg m−2, and that of the national total SOC stock 3.54–3.65 Pg. Uncertainty associated with SOC concentration had the largest contribution to SOC stock uncertainty. These findings have relevance for the ongoing REDD+ readiness process in Tanzania by supplementing the previous knowledge of significant carbon pools. The soil organic carbon pool makes up a relatively large proportion of carbon in Tanzania and is therefore an important carbon pool to consider alongside the ones related to the woody biomass. Going forward, the soil organic carbon data can potentially be used in the determination of reference emission levels and the future monitoring, reporting and verification of organic carbon pools.
    Genetic co-variance components within and among muscular, skeletal and functional traits differ among contrasting beef breeds
    Doyle, Jennifer ; Berry, Donagh P. ; Walsh, Siobhan W. ; Veerkamp, R.F. ; Evans, Ross D. ; Carthy, Tara R. - \ 2018
    In: World Congress on Genetics Applied to Livestock Production. - IAVS / Massey University - 8 p.
    Understanding root, tuber, and banana seed systems and coordination breakdown : a multi-stakeholder framework
    Bentley, Jeffery W. ; Andrade-Piedra, Jorge ; Demo, Paul ; Dzomeku, Beloved ; Jacobsen, Kim ; Kikulwe, Enoch ; Kromann, Peter ; Kumar, P.L. ; McEwan, Margaret ; Mudege, Netsayi ; Ogero, Kwame ; Okechukwu, Richardson ; Orrego, Ricardo ; Ospina, Bernardo ; Sperling, Louise ; Walsh, Stephen ; Thiele, Graham - \ 2018
    Journal of Crop Improvement 32 (2018)5. - ISSN 1542-7528 - p. 599 - 621.
    Bananas and plantains - root crops - seed security - seed systems - tuber crops - vegetatively propagated crops (VPC)

    Vegetatively propagated crop (VPC) seed tends to remain true to varietal type but is bulky, often carries disease, and is slow to produce. So VPC seed needs to be handled differently than that of other crops, e.g., it tends to be sourced locally, often must be fresh, and it is less often sold on the market. Hence, a framework was adapted to describe and support interventions in such seed systems. The framework was used with 13 case studies to understand VPC seed systems for roots, tubers, and bananas, including differing roles and sometimes conflicting goals of stakeholders, and to identify potential coordination breakdowns when actors fail to develop a shared understanding and vision. In this article, we review those case studies. The framework is a critical tool to (a) document VPC seed systems and build evidence; (b) diagnose and treat coordination breakdown and (c) guide decision-makers and donors on the design of more sustainable seed system interventions for VPCs. The framework can be used to analyze past interventions and will be useful for planning future VPC seed programs.

    Genetic covariance components within and among linear type traits differ among contrasting beef cattle breeds
    Doyle, Jennifer L. ; Berry, Donagh P. ; Walsh, Siobhan W. ; Veerkamp, Roel F. ; Evans, Ross D. ; Carthy, Tara R. - \ 2018
    Journal of Animal Science 96 (2018)5. - ISSN 0021-8812 - p. 1628 - 1639.
    Beef - Breeds - Cattle - Type traits

    Linear type traits describing the skeletal, muscular, and functional characteristics of an animal are routinely scored on live animals in both the dairy and beef cattle industries. Previous studies have demonstrated that genetic parameters for certain performance traits may differ between breeds; no study, however, has attempted to determine if differences exist in genetic parameters of linear type traits among breeds or sexes. Therefore, the objective of the present study was to determine if genetic covariance components for linear type traits differed among five contrasting cattle breeds, and to also investigate if these components differed by sex. A total of 18 linear type traits scored on 3,356 Angus (AA), 31,049 Charolais (CH), 3,004 Hereford (HE), 35,159 Limousin (LM), and 8,632 Simmental (SI) were used in the analysis. Data were analyzed using animal linear mixed models which included the fixed effects of sex of the animal (except in the investigation into the presence of sexual dimorphism), age at scoring, parity of the dam, and contemporary group of herd-date of scoring. Differences (P < 0.05) in heritability estimates, between at least two breeds, existed for 13 out of 18 linear type traits. Differences (P < 0.05) also existed between the pairwise within-breed genetic correlations among the linear type traits. Overall, the linear type traits in the continental breeds (i.e., CH, LM, SI) tended to have similar heritability estimates to each other as well as similar genetic correlations among the same pairwise traits, as did the traits in the British breeds (i.e., AA, HE). The correlation between a linear function of breeding values computed conditional on covariance parameters estimated from the CH breed with a linear function of breeding values computed conditional on covariance parameters estimated from the other breeds was estimated. Replacing the genetic covariance components estimated in the CH breed with those of the LM had least effect but the impact was considerable when the genetic covariance components of the AA were used. Genetic correlations between the same linear type traits in the two sexes were all close to unity (≥0.90) suggesting little advantage in considering these as separate traits for males and females. Results for the present study indicate the potential increase in accuracy of estimated breeding value prediction from considering, at least, the British breed traits separate to continental breed traits.

    Financing seed business
    Minneboo, Eline ; Gildemacher, Peter ; Ndung'u, David ; Kapran, Issoufou ; Yogo, Jonas ; Laizer, Raphael ; Nimpagaritse, Dévote ; Kadeoua, Adolphe ; Karanja, Daniel ; Simbashizubwoba, Cyriaque ; Ntamavukiru, Alexis ; Niangado, Oumar ; Oyee, Patrick ; Chebet, Andrew Noah ; Marandu, Damas ; Walsh, Stephen ; Gitu, Grace ; Kugbei, Sam - \ 2017
    ISSD Africa (KIT working papers 2017-3) - 20 p.
    Making business out of low-profit seed
    Gildemacher, Peter ; Kleijn, Wouter ; Gitu, Grace ; Kadeoua, Adolphe ; Kapran, Issouffou ; Karanja, Daniel ; Laizer, Raphael ; Marandu, Damas ; Minneboo, Eline ; Ndung'u, David ; Niangado, Oumar ; Nimpagaritse, Dévote ; Ntamavukiru, Alexis ; Simbashizubwoba, Cyriaque ; Walsh, Stephen ; Yogo, Jonas ; Kugbei, Sam - \ 2017
    ISSD Africa (KIT working papers 2017-1) - 8 p.
    Effective seed quality assurance
    Gildemacher, Peter ; Kleijn, Wouter ; Ndung'u, David ; Kapran, Issoufou ; Yogo, Jonas ; Laizer, Raphael ; Nimpagaritse, Dévote ; Kadeoua, Adolphe ; Karanja, Daniel ; Simbashizubwoba, Cyriaque ; Ntamavukiru, Alexis ; Niangado, Oumar ; Oyee, Patrick ; Chebet, Andrew Noah ; Marandu, Damas ; Minneboo, Eline ; Gitu, Grace ; Walsh, Stephen ; Kugbei, Sam - \ 2017
    ISSD Africa (KIT working papers 2017-2) - 20 p.
    Climate change and the vulnerability of electricity generation to water stress in the European Union
    Behrens, P. ; Vliet, M.T.H. van; Nanninga, T. ; Walsh, B. ; Rodrigues, J.F.D. - \ 2017
    Nature Energy 2 (2017). - ISSN 2058-7546
    Thermoelectric generation requires large amounts of water for cooling. Recent warm periods have led to curtailments in generation, highlighting concerns about security of supply. Here we assess EU-wide climate impacts for 1,326 individual thermoelectric plants and 818 water basins in 2020 and 2030. We show that, despite policy goals and a decrease in electricity-related water withdrawal, the number of regions experiencing some reduction in power availability due to water stress rises from 47 basins to 54 basins between 2014 and 2030, with further plants planned for construction in stressed basins. We examine the reasons for these pressures by including water demand for other uses. The majority of vulnerable basins lie in the Mediterranean region, with further basins in France, Germany and Poland. We investigate four adaptations, finding that increased future seawater cooling eases some pressures. This highlights the need for an integrated, basin-level approach in energy and water policy.
    Mapping and monitoring soil organic carbon in Africa’s cropland biome
    Walsh, M.G. ; Leenaars, J.G.B. - \ 2017
    Soil nutrient maps of Sub-Saharan Africa : assessment of soil nutrient content at 250 m spatial resolution using machine learning
    Hengl, Tomislav ; Leenaars, Johan G.B. ; Shepherd, Keith D. ; Walsh, Markus G. ; Heuvelink, Gerard B.M. ; Mamo, Tekalign ; Tilahun, Helina ; Berkhout, Ezra ; Cooper, Matthew ; Fegraus, Eric ; Wheeler, Ichsani ; Kwabena, Nketia A. - \ 2017
    Nutrient Cycling in Agroecosystems 109 (2017)1. - ISSN 1385-1314 - p. 77 - 102.
    Africa - Machine learning - Macro-nutrients - Micro-nutrients - Random forest - Soil nutrient map - Spatial prediction
    Spatial predictions of soil macro and micro-nutrient content across Sub-Saharan Africa at 250 m spatial resolution and for 0–30 cm depth interval are presented. Predictions were produced for 15 target nutrients: organic carbon (C) and total (organic) nitrogen (N), total phosphorus (P), and extractable—phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulfur (S), sodium (Na), iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), aluminum (Al) and boron (B). Model training was performed using soil samples from ca. 59,000 locations (a compilation of soil samples from the AfSIS, EthioSIS, One Acre Fund, VitalSigns and legacy soil data) and an extensive stack of remote sensing covariates in addition to landform, lithologic and land cover maps. An ensemble model was then created for each nutrient from two machine learning algorithms—random forest and gradient boosting, as implemented in R packages ranger and xgboost—and then used to generate predictions in a fully-optimized computing system. Cross-validation revealed that apart from S, P and B, significant models can be produced for most targeted nutrients (R-square between 40–85%). Further comparison with OFRA field trial database shows that soil nutrients are indeed critical for agricultural development, with Mn, Zn, Al, B and Na, appearing as the most important nutrients for predicting crop yield. A limiting factor for mapping nutrients using the existing point data in Africa appears to be (1) the high spatial clustering of sampling locations, and (2) missing more detailed parent material/geological maps. Logical steps towards improving prediction accuracies include: further collection of input (training) point samples, further harmonization of measurement methods, addition of more detailed covariates specific to Africa, and implementation of a full spatio-temporal statistical modeling framework.
    BASICS Nigeria : Building an Economically Sustainable, Integrated Cassava Seed
    Walsh, Stephen - \ 2017
    Centre for Development Innovation
    BENEFIT Partnership – 2016 Annual Report : Bilateral Ethiopian-Netherlands Effort for Food, Income and Trade Partnership
    Alemu, Dawit ; Tesfaye, Seblewengel ; Koomen, I. ; Ayana, Amsalu ; Walsh, Stephen ; Elias, Eyasu ; Vonk, R.B. ; Terefe, Geremew ; Schrader, T. ; Getaw, Helen ; Becx, G.A. ; Blomne Sopov, M. - \ 2017
    Centre for Development Innovation (CDI report CDI-17-005)
    The influence of service employees and other customers on customer unfriendliness : a social norms perspective
    Albrecht, Arne K. ; Walsh, Gianfranco ; Brach, Simon ; Gremler, Dwayne D. ; Herpen, Erica van - \ 2017
    Journal of the Academy of Marketing Science 45 (2017)6. - ISSN 0092-0703 - p. 827 - 847.
    Customer to customer influence - Descriptive norm - Identification - Injunctive norm - Social influence - Unfriendliness

    This research investigates the influence that social sources in the service environment exert on customer unfriendliness. Drawing on social norms theory, the authors demonstrate that descriptive norms (i.e., what most people are perceived to be doing in a certain situation), in the form of unfriendliness by service employees and fellow customers, predicts customers’ unfriendliness toward employees. Injunctive norms (i.e., beliefs about which behaviors are approved by important others) and identification with fellow customers exert moderating effects. Specifically, strong injunctive norms can buffer the effect of descriptive norms. Furthermore, fellow customers influence a customer’s unfriendliness only if he or she identifies either very strongly or very weakly with them. By clarifying the role of norms in service encounters, this study provides insights on when unfriendly customer behavior is likely to occur. Managerial implications for companies who want to diminish customer unfriendliness are discussed.

    A Lockean approach to greenhouse gas emission rights
    Weikard, Hans Peter - \ 2016
    In: The Ethical Underpinnings of Climate Economics / Walsh, A., Hormio, S., Purves, D., Taylor and Francis - ISBN 9781138122963 - p. 183 - 197.
    Carbon dioxide (CO2) was discovered by the Scottish chemist Joseph Black in 1754. A few years later, in 1769, James Watt introduced an improved version of the steam engine and coal became the primary source of energy for a wide range of industrial processes and for transport. At that time carbon dioxide was not considered a pollutant. It does not smell and it is not toxic. Today it is an established fact that CO2 is the most important greenhouse gas with the potential to change the global climatic system. As a response the international community established the United Nations Framework Convention on Climate Change (UNFCCC) in 1992. With the ratification of the Kyoto Protocol in February 2005 international policies have been adopted aiming at a reduction of greenhouse gas emissions. A potentially efficient tool to implement reductions of greenhouse gases are tradable emission permits. In 2005 the European Union launched a system of tradable emission permits and thereby created new property rights. This system of property rights, however, does not cover emissions from all sectors of the economy and, more importantly, it is confined to European countries. The fundamental problem of implementing emission restrictions with limited global emission rights remains unresolved. Of the many reasons why a global agreement has proven to be difficult to obtain, one seems to be the most prominent: the unsettled question of who should receive the CO2 emission permits.2 While in practical political terms this may be a bargaining problem, it is certainly a problem of justice. The emergence of property rights, and particularly the introduction of CO2 emission permits, raises three different questions:
    • The process of the emergence of property rights as a reaction to increasing scarcity. Increasing scarcity is a driver of institutional reform, including the regulation of access to resources (see e.g. Libecap 1989)
    • The efficiency of a private property rights regime as compared to joint management of common pool resources is a debated issue; cf. e.g. Demsetz (1967) and Ostrom (1990) and Stevenson (1991); and
    • The distributional aspects of an initial allocation of property rights.
    Programme on Integrated Seed Sector Development in Ethiopia : 2015 Annual report
    Walsh, Stephen ; Thijssen, M.H. - \ 2016
    Centre for Development Innovation (Report CDI-16-012 ) - 45
    seeds - seed production - agroindustrial sector - entrepreneurship - businesses - development - ethiopia - zaden - zaadproductie - agro-industriële sector - ondernemerschap - bedrijven - ontwikkeling - ethiopië
    The programme on Integrated Seed Sector Development in Ethiopia aims to strengthen the development of a vibrant, market-oriented and pluralistic seed sector in the country, where quality seed of superior varieties is available and affordable for a larger number of farmers, thereby contributing to food security and economic development in Ethiopia. The programme is a joint effort of Bahir Dar University, Haramaya University, Hawassa University, Mekelle University, Oromia Seed Enterprise, the Ethiopian Seed Association and Centre for Development Innovation of Wageningen UR. Partners include governmental organizations at federal, regional and local level, non-governmental organizations, development organizations, and seed businesses operating at different scales. The programme is funded by the Directorate General for International Cooperation through the Embassy of the Kingdom of the Netherlands in Addis Ababa.
    Preface
    Pereira, Paulo ; Ferreira, Antonio J.D. ; Sarah, Pariente ; Cerdà, Artemi ; Walsh, Rory ; Keesstra, Saskia - \ 2016
    Journal of Soils and Sediments 16 (2016)11. - ISSN 1439-0108 - p. 2493 - 2499.
    Check title to add to marked list
    << previous | next >>

    Show 20 50 100 records per page

     
    Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.